Define streaming?
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What is nlineoutputformat?
How we can take Hadoop out of Safe Mode?
Define a datanode?
How Mapper is instantiated in a running job?
How to configure hadoop to reuse JVM for mappers?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
Define a job tracker?
On which port does ssh work?
Explain a simple Map/Reduce problem.
Explain the features of stand alone (local) mode?
What exactly is hadoop?
when hadoop enter in safe mode?
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